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Category:Letter
MONTHYEAR05000395/LER-2024-002, Loss of Control Room Emergency Filtration System2024-10-15015 October 2024 Loss of Control Room Emergency Filtration System ML24290A1052024-10-0707 October 2024 Core Operating Limits Report VCSNS Unit 1 Cycle 29, Revision 0 ML24274A1942024-09-26026 September 2024 (Vcsns), Unit 1 Subsequent License Renewal Application (SLRA) First 10 CFR 54.21(b) Annual Amendment IR 05000395/20244042024-09-26026 September 2024 Cyber Security Inspection Report 05000395-2024404 - Public ML24267A0542024-09-23023 September 2024 Clarification Regarding Area of Potential Effect for the Subsequent Operating License Renewal for Virgil C. Summer Nuclear Station Fairfield County, South Carolina (SHPO Project Number: 22-EJ0147) (Docket Number: 50-395) ML24267A0642024-09-23023 September 2024 Clarification Regarding Area of Potential Effect for the Subsequent Operating License Renewal for Virgil C. Summer Nuclear Station Fairfield County, South Carolina (SHPO Project Number: 22-EJ0147) (Docket Number: 50-395) ML24267A0592024-09-23023 September 2024 Clarification Regarding Area of Potential Effect for the Subsequent Operating License Renewal for Virgil C. Summer Nuclear Station Fairfield County, South Carolina (SHPO Project Number: 22-EJ0147) (Docket Number: 50-395) ML24267A0552024-09-23023 September 2024 Clarification Regarding Area of Potential Effect for the Subsequent Operating License Renewal for Virgil C. Summer Nuclear Station Fairfield County, South Carolina (SHPO Project Number: 22-EJ0147) (Docket Number: 50-395) IR 05000395/20244022024-09-10010 September 2024 Security Baseline Inspection Report 05000395/2024402 IR 05000395/20240052024-08-22022 August 2024 Updated Inspection Plan for Virgil C. Summer Nuclear Station - Report 05000395/2024005 ML24190A4012024-08-19019 August 2024 Request for Withholding Information from Public Disclosure Regarding the Subsequent License Renewal Application - Dominion Energy Letter Dated May 30, 2024 IR 05000395/20240022024-08-12012 August 2024 Integrated Inspection Report 05000395/2024002 ML24180A0062024-08-0505 August 2024 Issuance of Amendment No. 227 to Modify Technical Specification 3.8.3.1 to Increase Completion Time for 120-Volt A.C. Vital Busses ML24218A3002024-08-0101 August 2024 Environmental Review Response to NRC Requests for Additional Information and Response to NRC Requests for Confirmation of Information Set 1 ML24158A3882024-07-31031 July 2024 Issuance of Amendment No. 226 to Change Emergency Plan Staff Augmentation Times and Relocate Emergency Operations Facility ML24162A3292024-07-0505 July 2024 Letter to E Carr - V.C. Summer Unit 1 - Summary of the May 2024 Audit Regarding the Environmental Review of the Subsequent License Renewal Application IR 05000395/20240112024-06-26026 June 2024 – Comprehensive Engineering Team Inspection Report 05000395/2024011 ML24178A2422024-06-25025 June 2024 2023 Annual Report of Emergency Core Cooling System (ECCS) Model, Changes Pursuant to the Requirements of 10 CFR 50.46 ML24178A1192024-06-25025 June 2024 Update to License Amendment Request- Inverter Allowed Outage Time (AOT) Extension ML24177A1382024-06-25025 June 2024 Aging Management Audit Report- VC Summer, Unit 1 - Subsequent License Renewal Application ML24177A2792024-06-20020 June 2024 Preparation and Scheduling of Operator Licensing Examinations ML24171A0152024-06-17017 June 2024 Update to Subsequent License Renewal Application (SLRA) Response to NRC Request for Additional Information Set 2 Safety Review ML24157A3352024-06-0606 June 2024 – Notification of an NRC Cybersecurity Baseline Inspection (NRC Inspection Report 05000395-2024404 and Request for Information ML24155A2042024-05-31031 May 2024 Proposed Alternative Request RR-24-123, Containment Unbonded Post-Tensioning System Inservice Inspection Requirements ML24155A1462024-05-30030 May 2024 Update to Subsequent License Renewal Application (SLRA) -Response to NRC Request for Additional Information Set 1 Response to NRC Request for Confirmation of Information Set 1 and Supplement 3 ML24143A1792024-05-22022 May 2024 Special Report 2024-001-01 for Virgil C. Summer Nuclear Station (Vcsns), Unit 1, Waste Gas System Inoperability ML24141A2822024-05-20020 May 2024 (Vcsns), Unit 1 - License Amendment Request - Emergency Response Organization (ERO) Augmentation Time Change, Emergency Operations Facility Relocation and Other Emergency Plan Changes IR 05000395/20240012024-05-10010 May 2024 Integrated Inspection Report 05000395/2024001 ML24129A2002024-05-0606 May 2024 Update to Subsequent License Renewal Application, Supplement 2 IR 05000395/20240402024-05-0101 May 2024 95001 Supplemental Inspection Report 05000395/2024040 and Follow-Up Assessment Letter ML24120A2072024-04-29029 April 2024 Submittal of Annual Radiological Environmental Operating Report ML24121A1002024-04-29029 April 2024 Response to Request for Additional Information Regarding Alternative Request RR-5-V2 ML24116A2052024-04-23023 April 2024 Annual Radioactive Effluent Release Report ML24109A1792024-04-19019 April 2024 Aging Management Audit Plan Regarding the Subsequent License Renewal Application Review ML24108A0392024-04-18018 April 2024 Letter to E Carr-V.C. Summer Unit 1- Regulatory Audit Regarding the Environmental Review of the Subsequent License Renewal Application ML24108A1432024-04-17017 April 2024 (Vcsns), Unit 1, Automatic Actuation of B Emergency Diesel Generator ML24108A0672024-04-17017 April 2024 Submittal of Summary for Condition of the Service Water Intake Structure Provided in Accordance with License Condition 2.C.5.d ML24100A7312024-04-0909 April 2024 Personnel Exposure and Monitoring Annual Report ML24095A2072024-04-0101 April 2024 Update to Subsequent License Renewal Application (SLRA) Supplement 1 ML24088A2062024-03-26026 March 2024 Annual Operating Report ML24087A2182024-03-26026 March 2024 (Vcsns), Unit 1 - License Amendment Request - Emergency Response Organization (ERO) Augmentation Time Change, Emergency Operations Facility Relocation and Other Emergency Plan Changes - Response to Request. ML24087A2262024-03-26026 March 2024 License Amendment Request - Inverter Allowed Outage Time Extension Response to Request for Additional Information ML24067A0232024-03-0707 March 2024 (Vcsns), Unit 1 - Readiness for 95001 Supplemental Inspection; EA-23-093 IR 05000395/20230062024-02-28028 February 2024 Annual Assessment Letter for Virgil C. Summer Nuclear Station - Report 05000395/2023006 IR 05000395/20244032024-02-27027 February 2024 Security Baseline Inspection Report 05000395/2024403 ML24057A1132024-02-22022 February 2024 Special Report 2024-001 Waste Gas System Inoperability ML24051A0112024-02-20020 February 2024 Fws to NRC, List of Threatened and Endangered Species That May Occur in Proposed Project Location or May Be Affected by Proposed Project for V.C. Summer SLR ML24057A0612024-02-19019 February 2024 and Virgil C. Summer Power Nuclear Stations - Nuclear Property Insurance Coverage ML24032A3062024-02-15015 February 2024 Exemption from Select Requirements of 10 CFR Part 73 - Security Notifications, Reports, and Recordkeeping and Suspicious Activity Reporting ML24040A1802024-02-12012 February 2024 Notification of NRC Supplemental Inspection (95001) and Request for Information 2024-09-26
[Table view] Category:Licensee Response to Enforcement Action
MONTHYEARML24022A1582024-01-22022 January 2024 (Vcsns), Unit 1 - Reply to a Notice of Violation: EA-23-093 ML23044A5772023-02-13013 February 2023 (VCSNS) Unit 1, Readiness for 95001 Supplemental Inspection; EA-22-039 2024-01-22
[Table view] Category:Licensee Response to Notice of Violation
MONTHYEARML24022A1582024-01-22022 January 2024 (Vcsns), Unit 1 - Reply to a Notice of Violation: EA-23-093 ML23044A5772023-02-13013 February 2023 (VCSNS) Unit 1, Readiness for 95001 Supplemental Inspection; EA-22-039 ML22322A0882022-11-17017 November 2022 (Vcsns), Unit 1 - Reply to a Notice of Violation; EA-22-039 ML22236A1172022-08-22022 August 2022 (Vcsns), Unit 1 - Response to an Apparent Violation (EA-22-039) ML22200A2862022-07-19019 July 2022 (Vcsns), Unit 1 - Pre-Decisional Reply to Apparent Violation 05000395/2022001-01 RC-17-0126, Reply to a Notice of Violation, Per Inspection Report 05000395/20170022017-09-0606 September 2017 Reply to a Notice of Violation, Per Inspection Report 05000395/2017002 RC-16-0173, Reply to Notice of Violation2016-12-20020 December 2016 Reply to Notice of Violation ML13252A2402013-09-0505 September 2013 Reply to Notice of Violation, EA-13-106, IR 05000395-13-009 ML1102100392010-11-22022 November 2010 Reply to Notice of Violation EA-10-204, NRC IR 05000395-10-004 RC-06-0111, Reply to Notice of Violation: EA-06-046 NRC Inspection Report 2006-0112006-06-0101 June 2006 Reply to Notice of Violation: EA-06-046 NRC Inspection Report 2006-011 RC-05-0034, Response to Preliminary White Finding, NRC Inspection Report 2005006, Apparent Violation AV 05000395/2005006-022005-02-23023 February 2005 Response to Preliminary White Finding, NRC Inspection Report 2005006, Apparent Violation AV 05000395/2005006-02 RC-01-0218, Revised Response to Unresolved Issue (URI) No. 50-395/01-09-01, RC-01-2182004-02-10010 February 2004 Revised Response to Unresolved Issue (URI) No. 50-395/01-09-01, RC-01-218 RC-01-1839, Response to IR 05000395/2001-009. Provides Comments in Response to Identified Finding on Lack of Operator Training for Entry Into Fire Protection Procedures2002-01-0909 January 2002 Response to IR 05000395/2001-009. Provides Comments in Response to Identified Finding on Lack of Operator Training for Entry Into Fire Protection Procedures 2024-01-22
[Table view] |
Text
Dominion Energy South Carolina, Inc.
5000 Dominion Boulevard, Glen Allen, VA 23060 Dominion Energy.com Document Control Desk January 22, 2024 U.S. Nuclear Regulatory Commission Washington, DC 20555 DOMINION ENERGY SOUTH CAROLINA (DESC)
VIRGIL C. SUMMER NUCLEAR STATION (VCSNS) UNIT 1 REPLY TO A NOTICE OF VIOLATION: EA-23-093 Serial No.:
VCS-LIC/JB:
Docket No.:
License No.: 24-022 RO 50-395 NPF-12 By letter dated December 21, 2023 (Reference 1 ), the Nuclear Regulatory Commission (NRC) notified Dominion Energy South Carolina (DESC) of a Notice of Violation (NOV 05000395/2023002-01) and associated White Finding.
The purpose of this letter is to provide the required written response to NOV 05000395/2023002-001, pursuant to 10 CFR 2.201. Attachment 1 provides the reason for the violation, corrective steps taken and results achieved, corrective steps that will be taken and the date when full compliance was achieved.
Should you have any questions regarding this response or require additional information, please contact Mr. Michael Moore, Manager Nuclear Emergency Preparedness and Station Licensing at (803) 345-4752.
Sincerely, Eric S. Carr President -Nuclear Operations and Chief Nuclear Officer ft Dominion ;t: a,, Energy
References:
Serial No. 24--022 Docket No. 50-395 Page 2 of 2
- 1. Letter from Laura A. Dudes (NRC) to Eric S. Carr (DESC), "Virgil C. Summer-Final Significance Determination of a White Finding and Notice of Violation and Assessment Follow-up Letter; NRC Inspection Report 05000395/2023091," dated December 21, 2023. (ADAMS Accession No. ML23342A000)
Attachment:
- 1. Reply to a Notice of Violation; EA-23-093 Commitments contained in this letter: None cc: G. J. Lindamood -Santee Cooper L Dudes -NRC Region II D. Dumbacher -NRC Region II G. E. Miller -NRC Project Mgr.
NRC Resident Inspector REPLY TO A NOTICE OF VIOLATION: EA-23-093 Dominion Energy South Carolina Virgil C. Summer Nuclear Station Unit 1 Serial No.24-022 Page 1 of 3 REPLY TO A NOTICE OF VIOLATION; EA-23-093 Reason for the Violation Serial No.24-022 Page 2 of 3 VCSNS failed to identify and correct a condition adverse to quality affecting its Emergency Diesel Generator (EOG) fuel oil system piping on both the 'A' and 'B' EDGs. This condition adverse to quality resulted in the failure of the 'A' EOG fuel oil piping, during testing on November 2, 2022.
Evaluation determined that the failure occurred at a threaded Schedule 40 piping connection.
A root cause evaluation determined that the cause for VCSNS failure to identify and correct the condition adverse to quality was the corrective action program governed by VCSNS procedure SAP-999 (Corrective Action Program). Specifically, Revision 13 and subsequent revisions of SAP-999 failed to drive effective evaluation/ resolution of the EOG fuel oil piping vulne rability.
Corrective Steps That Have Been Taken and the Results Achieved SAP-999 has been canceled and replaced with PI-AA-200, Corrective Action, which screens equipment deficiencies as conditions adverse to quality and drives effective evaluation/resolution. Additional corrective actions to address extent of condition and extent of cause are being implemented as determined by the root cause evaluation.
The affected EOG fuel oil piping has been replaced and bridging strategies, such as pre-staging replacement fuel oil piping and workorders, have been established for the EOG fuel oil piping until a design modification, scheduled for the first quarter of 2024, is implemented.
Corrective Steps That Will be Taken PI-AA-200, Corrective Action, will be revised to incorporate lessons learned from the root cause evaluation. VCSNS is implementing a Culture of Prevention model to focus on consequence bias and improve risk behaviors. Leade rship training is being provided as a part of implementation. Effectiveness reviews of the root cause actions will be performed to ensure the desired results are achieved.
The EOG fuel oil system is being re-designed and a modification is planned for implementation during the first quarter of 2024. This modifi cation will use heavier wall piping and additional pipe supports based on re-analysis of the EOG fuel oil system.
Select risk-significant systems are being reviewed to determine if there are any other examples of small diameter Schedule 40 piping with threaded connections subject to high-cyclic fatigue, in order to address other potential equipment configurations with vulnerabilities similar to the EOG fuel oil system. Additionally, historical Non-Conditions Adverse to Quality (NCAQ)
Condition Reports and corrective work orders, initiated per SAP-999 between February 2019 Serial No.24-022 Page 3 of 3 and February 2022, are being reviewed to identify potential unaddressed vulnerabilities or previously unidentified repetitive conditions for select risk-significant systems.
Date When Full Compliance Will be Achieved Compliance was achieved in February 2022, when SAP-999 was replaced with PI-AA-200, Corrective Action. Operability of the 'A' EOG was restored November 2, 2022, following replacement of effected fuel oil piping.